Remarks: This WO2A Telephone Adapter Base DECT (1.8GHz) optimized for Microsoft Lync is NOT compatible with Plantronics Savi Office W700 DECT 6.0 (1.9GHz) United States Wireless Headsets Plantronics Savi WO2A Wireless Headset Replacement Charging Base / Transceiver (Microsoft version) If your Plantronics Savi Office W710/A-M, W720/A-M, W730/A-M & W740/A-M charging base has been damaged or is defective, this replacement unit will get you up and running again. W710/A-M, W720/A-M, W730/A-M & W740/A-M wireless headset will need to be paired with the replacement transceiver -- a simple, two-step process. Important note: This product is offered elsewhere and may be removed from this listing without notice. Buyer is responsible for paying any governmental taxes imposed on your purchases, includi.